| fluitspeler | flautista |
| fluittoon | silbato |
| Fluitzwaan | Cygnus columbianus |
| Flumenthal | Flumenthal |
| Fluminense FC | Fluminense Football Club |
| Flunitrazepam | Rohypnol |
| fluor | fluoruro |
| fluorescent | fluorescente |
| Fluorescent in situ hybridization | Fluorescencia in situ hibridación |
| fluorescentie | fluorescencia |
| fluorescentiebuis | luz de neón |
| Fluorescentielamp | Lámpara fluorescente |
| Fluorescentiemicroscopie | Microscopio de fluorescencia |
| fluoresceren | ser fluorescente |
| fluorescerend | fluorescente |
| fluorescerend licht | luz de neón |
| fluoride | fluoruro |
| fluorideren | fluorizar |
| Fluoroquinolone | Quinolona |
| Fluoroscopie | Fluoroscopia |
| flush | flux |
| Flushed Away | Flushed Away |
| Fluvastatine | Fluvastatina |
| fluviatiel | fluvial |
| fluweel | terciopelo |
| fluweelachtig | aterciopelado |
| Fluweelwormen | Onychophora |
| Fluwelen Revolutie | Revolución de Terciopelo |
| Fluwelen zwemkrab | Necora puber |
| Fluwijn | Martes foina |
| flux | flujo |
| Fluxbox | Fluxbox |
| Fluxus | Fluxus |
| Fluïdisatie | Fluidización |
| fluïdum | fluido |
| Fly Away Home | Volando libre |
| Fly by Night | Fly by Night |
| Fly-by-wire | Fly-by-wire |
| Flyff | Flyff |
| Flying Dutchman | El holandés errante |
| FlyLAL | FlyLAL |
| Flyleaf | Flyleaf |
| Flynn-effect | Efecto Flynn |
| Flysch | Flysch |
| Flávio Amado | Flávio Amado |
| Fläsch | Fläsch |
| Flórina | Florina |
| Flüelen | Flüelen |
| flügelhorn | clarín |
| Flühli | Flühli |
| FM | FM |
| FN FAL | FN FAL |
| FN Five-seveN | FN Five-seven |
| FN MAG | FN MAG |
| Fnac | FNAC |
| fobie | fobia |
| Focaccia | Focaccia |
| focking | maldito |
| Focolarebeweging | Movimiento de los Focolares |
| focus | punto focal |
| Foederati | Foederati |
| foefelen | estafar |
| foefje | disculpa |
| foei | bah |
| foelie | hoja de metal |
| Foeniculum | Foeniculum vulgare |
| Foer | Pueblo fur |
| foetaal | fetal |
| foetus | feto |
| Foggia | Foggia |
| foie gras | paté |
| Foios | Foyos |
| Foix | Foix |
| fok | trinquete |
| Fokida | Fócida |
| fokkemars | cofa de trinquete |
